#include <stdio.h>

void print_out_number(int a);

int main() {
	printf("start\n");
	print_out_number(1234567890);
	printf("\nend\n");
	int a;
	scanf_s("%d", &a);
	return 0;
}

void print_out_number(int a) {
	if (a < 10) {
		printf("%d", a);
	}
	else {
		print_out_number(a / 10);
		printf("%d", a%10);
	}
}